便道棧橋設計施工方案.doc
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便道施工方案
1、施工里程、便道尺寸及會車道設置
因受房屋拆遷的影響，本段工程施工便道由105國道引入，從中江高速公路橋下42號墩處往小里程方向修建，便道起屹于DK52+054.09，長1.4km，修在線路左側，設為無坡便道。
便道尺寸路基寬度4.5m，路面寬度3.5m，根據車流量情況以及施工過程中，車型的不同，初步定為每隔200～300m設一處錯車道，錯車道路基寬度6.5m，路面寬度5.5m，長度15m，設置位置分別為8～9#墩之間DK52+324.33～DK52+339.33、15～16#墩之間DK52+553.51～DK52+568.51、22～23#墩之間DK52+782.69～DK52+797.69、29～30#墩之間DK53+11.75～DK53+26.75、37～38#墩之間DK53+257.35～DK53+272.35。便道左側設50×50cm的邊溝。
2、便道填料
便道填料底層采用混碴填筑，承重層采用50～60cm厚片石填筑，面層采用10～20cm厚碎石鋪填。
3、施工方法及養護
(1)先清除便道內樹木、垃圾及有機物殘渣，然后在便道左側開挖邊溝，結合農田水系，在必要的地方設置排水設施。
(2)第一層混碴填筑：根據地形情況決定填筑用
Sidewalk construction program
1, the construction mileage, pavement size and will Drive Set
Due to the impact of house demolition, the construction of this section of road on State Road 105, introduced by the, from Pier No. 42 River Highway Bridge Department to the direction of the construction of a small mileage, pavement from the Yi in DK52 +054.09, length 1.4km, repair the line on the left , Make no slope pavement.
Pavement subgrade width dimensions 4.5m, surface width of 3.5m, according to traffic flow as well as the construction process, the different models, initially at intervals of 200 ~ 300m set a wrong lane, the wrong car road base width 6.5m, road surface width of 5.5 m, length 15m, set the location were between 8 and 9, pier DK52 +324.33 ~ DK52 +339.33,15 ~ 16 # pier between the DK52 +553.51 ~ DK52 +568.51,22 ~ 23 # pier between the DK52 +782.69 ~ DK52 +797.69,29 ~ 30 # pier between the DK53 +11.75 ~ DK53 +26.75,37 ~ 38 # pier between the DK53 +257.35 ~ DK53 +272.35. Sidewalk on the left of the ditches located 50 × 50cm.
2, pavement filler
Pavement filler mix ballast by filling the bottom, load-bearing layer is 50 ~ 60cm thick rubble filling, surface layer is 10 ~ 20cm thick stone the filling.
3, construction methods and conservation
(1) to clear the trees within the sidewalk, garbage and organic residues, and then left in the pavement digging ditches, combined with agricultural water, where necessary drainage facilities.
(2) The first layer of mixed slag filling: Filling the decision in accordance with terrain conditions